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Home My WebLink About3161-26j CONCRETE A. QENERAJ I. Contractor shallprovide oil labor, materials and equipment to construct concrete 7. Colored concrete, where indicated on the drawings, shall be colored with the- 10. Reinforcing steel shall be Grade 40 or Grade 60 billet steel conforming to ASTM items as indicated on the drawings and specified herein. roper proportion of Chromix Aamixture, as manufactured by L.M. Scofield A-615 Varying grades ,shall not be used interchangeably in any one wall Company, los Angeles, California. Surfaces shall be finished uniformllY with the 2. Concrete shall consist of portland cement, fine aggregate (sand), coarse aggregate s cified finish or texture and cured with lithochrome Colorwox (or Colorcure C INSTALLATION and water, proportioned and mixed to attain a twenty-eight (28) day compressive Concrete Sealer) in the matching color. All botching, placing finishing and curing strength of at least 2,500 pounds per square inch with a slump not to exceed three shall be in accordance with Scofield's Technicol Data Bulletins. l . All work shall be�erformed in compliance with applicable local b ildin rdinon inches 3" . Concrete shall not contain reactive aggregate or calcium chloride. PI PP u g o ces ( )and Uniform Building Code and Masonry Design Manual 8. Retardant finish, where indicated on the drawl n s, shall be "exposed' using 3. . oddition �o complying with all pertinent codes and regulations of local governing lithochrome Concrete Surface Retarder by L.M. Sco�ield Company and applied in 2. All walls shall be laid true, level, and iamb, and unless otherwise indicated on the o:-encies, Contractor shall com yl with all pertinent recommendations contained in accordance with Scofield's Application Instructions D-203. drawings. Brick and concrete block p ll "recommended Practice for concrete Formwork", publication #347-78 of the PP n9 be shall be laid in a running bond pattern. American Concrete institute. 9. Stomped concrete, where indicated on the drawings, shall be performed by 3. Brick and stone shall be clean, wetted immediately before laying and shall be laid applying special forming tools while concrete is still in the plastic stage of -set. on a full mortar bed with push joints". B. MATERIAL Desired pattern sholl be as indicated on the drawings. Contractor shall be licensed, tooled, and trained by Bomonile Corporation, or approved equal. A. Concrete block which becomes wet shall be permitted to dry before commencing 1. Cement sholl be Type II low alkali portlond cement conforming to ASTM C-150. „work. cement shall be ofthe some brand and type used throughout the project. H INT 5. Mortar joints for brick and concrete block shall be stroight, clean, uniform in 2. Sand shall consist of natural or manufactured granular material, free of deleterious 1. Expansion joints shall be as indicated on the drawings and at corners, radius points thickness of not less than thre"* hths of an inch (3/8"), tooled to produce a slightly amounts of organic material, mica, loom, cloy, and other substances not suitable for and at regular intervols not to exceed ten feet (M) on center. Set rem lded concave surface, and well bonded of edges. portlond cement concrete. Sand shall be thoroughly and uniformly washed. expansion pint dip below finished surface, temporarily secured to top of ex expansion stripp or use o removable plastic filler strip. Expansion joints shall be sealed with a 6 Mortar joints for stone shall be tooled to produce a slightly concave surrtoce, and 3. Coarse Aggregate shall be composed of gravel or o blended mixture of crushed polysulfI a water -proof caulking well -bonded to stone of edges. rock and groyee containing no more than fifty (50) percent of crushed rock particles having oll faces froctured and not less than twenty-five percent (25%) of r ntr l i 7 Controckx shall ovi a ion ' in t r r n t 'grovel. 2 Sco ed cooto nts shall be tooled to o m►n�mum depth of three-quarters inch pr de xpons to iso co ne s a d o thirty feet (30) on center A gregotes shall not exceed a diameter of one and one-half inches (1 /20) (3/A) and a radius of ono -eighths inch 1 at fru foot 'Intervals.or os re aired b local code. Blending shall produce a uniform, consistent percentage of each. Rock products (/ ) 9 (/8) a oo (S) q Y shall be clean hard, sound, durable, uniform in quality and free of any detrimental 3 Saw cut joints, where specified shall be as indicated on the drawings or at intervals 8 All bolts and anchors to be inserted in the wall shall be solidly grouted in place quontity of soh, friable, thin, elongated or lam mated pieces, disintegrated material, not to exceed ten feet ( 10') on center, and shall be cut to a minimum depth of one organic matter, oil alkali or other deleteriouf substonces. - " 9 inch (1 ) and a width not to exceed one-quarter inch (i /4) 9. Contractor shall provide weep holes in first or second Byer of brick as indicated in details on drawings or as required. 4. Water shall not containn�deletf of substances or o f amount of impurities that will I. RING cause o change the me o setting The amounto water used in the mixture shall D REINFORCEMENT not exceed the amount necessary to permit material placement and consolidation. 1 . Curing compound shall form on impervious membrane and shall be a blend ofpure waxes and alkali-resistont pigments in a solvent emulsion, manufactured by 1.M 1 Reinforcement shall be placed as indicated on the drawings and as required by C. FORMS Scofield, or approved equal building codes 1. Forms shall be free of warp, set plumb and true to line and grade with upper edges 2. Spraying of curing compound shall commence as soon as free water leaves the 2 Horizontal steel for concrete block walls shall be laid in a course of bond beam Rush with specified grade or finished surface of the constructed improvement, and surface but no later than three (3) hours following placement of concrete block filled with grout ■ not more than on&half inch (1 /2) less in depth than the specified thickness of the edge of the concrete to be paced. 3 For concrete block walls, a vertical dowel shall be provided'in the foundation for J BELOW GRADE WATERPROOFING eoch veriical bor Vertical cores containing steel shall be filled solid. with grout 2. Wooden forms shall have a net thickness of of least one and one-half inches (1 1/20) and shall be free of imperfections which would impair the strength for the use l . Ela.stomeric waterproofing membrane shall be Multicoat MULASTICOAT as E LAYING PAVERS_ intended. Forms shall be secured by noiling to side stakes of sufficient length and manufactured by Multicoot Corporation or an approved equal. cross-sectional area to adequately resis! lateral displacement during placement of i Spread and screed setting bed to a uniform thickness, except for minor variations r 11 n rid sholl receive a coat of light oil immediate riot concrete. Forms shall be clean o ec g 1Y P 2. Deliver materials in monufocturer s original unopened containers required to produce v true surface, level in plane or uniformly spread for drainage to placing concrete. Benders or thin plank forms may be used on curves as shown on drawings . 3. Metal forms shall hove sufficient rigidity to resist springing during placement of 3. Rotes and application method shall be as recommended by the manufacturer concrete. Forms shall be secured by means of metol stakes designed so as to be K. GRAFFITI CONTROL R driven below the top of the forms through openings, locking them into position. 1 Product shall be Graffiti Control as manufactured by Sure Klean or on approved D. REINFORCEMENT equal. 1. Reinforcement shall conform to the dimensions and details shown on the drawings 2. Deliver materials �n manufacturer's ori Ana) unopened containers .2 Setting bed: hall be three-quarter inch (3/4') minimum and one and one-quarter { r h f all rust mill scale mortar, oil dirt or coatis of g P inch (1 1 /4) maximum and steal be cleaned Ilio oug o a g - any character which would be likey to destroy or impair its proper bonding with the 3 Rates and application method shall be as recommended b the manufacturer • concrete. PP y3. Apply a thin loyerr of cement poste (1 /32 to 1 /116 )y,brushing or troweling over 2. Reinforcirx� steel, where indicated on the drawings, shall be Grade 40 or Grade 60 L. REPAIRS AND REPLACEMENT setting bed or to bottom of brick Set and leve eachb ick billet steel, conforming to ASTM A-61 S. Costs incurred due to re it or re lacement of defectiv or damn w work boll be the F - BELOW GRADE WATERPROOFING Pa p e damaged o s 3. Wire mesh reinforcement, where indicated on the drawings, shall conform to ASTM responsibility of the Contractor 1 . Elastomeric waterproofing membrane shall be Muhicoot MULASTICOAT as A-185. manufactured by Multicoat Corporation or on approved equal. M. BACKFILLING E. TRANSIT MIXERS 2. Deliver materials in monufocturer's original unopened containers Bockfill material shall be free from large clods, stones, and other objectionoble materials, 1 . Mixing shall be commenced as soon as possible after the cement is placed in exceeding three inches (3") in diameter. 3. Rates and application method shall be as recommended bythe manufacturer contact with aggregates but in no event shall the intervening time period exceed thirty (30) minutes. G. GRAFFITI CONTROL 2. Mixing and delivery of reody-mixed concrete shall conform to ASTM C-94 1. Product shall be Graffiti Control as manufactured by Sure Kleon or on approved equal. 3. Adequate control of read - mixed concrete shall provide for additional water to be 2. Deliver materials �n manufacturer's original unopened Containers _ added and mixed into �,e batch at the project site. Amount withheld shall not exceed two and one-half (2 1 /2) gallons of water per cubic yard of mix MASONRY 3. Rates and application method shall be as recommended by the manufacturer A. The total elapsed time between the addition of water at the batch plant and A GENERAL - discharging of project site shall not exceed ninety (90) minutes H. REPAIRS AND REPLACEMENT Contractor shall provide all labor, materials and equipment to construct masonry F. PLACING CONCRETE structures conforming to the dimensions and details indicated on the drawings and specified herein Costs incurred due to repair or replacement of defective or damaged work shall be the 1. install embedded items accurately in their proper locations, secured against responsibility of the Contractor. ® displacement, prior to placing concrete. B. MATERIALS I. BACKFILLING 2. Concrete shall be placed on native grade, certified compacted subgrode, or 1 . Brick shall be whole, sound, hard burned, give a clear ringing sound when struck Bo kfill material, shall be ree from large clods, stones and other objectionable materials subbase material, free of all Bose and extraneous material sufficientdampened together, and be uniform in quality. Brick shall be clean and tree of dust or other to ensure that no moisture will be absorbed from the fresh concrete foreign materials Net size, color and texture of units shall be as shown on the exceeding three -inches (3") in diameter. drawings 3. Concrete shall be distributed uniformly and thoroughly vibrated in o monner that will encase the reinforcement, fill the forms and bring the surface true to grade and 2 Hollow food bearing ASTM Cmosonry unit shall be mode with sand -grovel aggregate and cross-section. shall conform to -90 for Grade N -I units, free of crocks or defects Net size of units shall be shown on the drawings 4. Equipment used shall not have any aluminum components coming into direct contact with the concrete. 3. Stone shall be uniform in quality, clean and free of dust or other foreign materials G. FINISHING 4 Mortar used in masonry construction shall be one (1) port Portland cement to two . and oner�alf (2 1/2) parts of sand, to which o vomer j 1 /4j to onc�half (1 /2) part 1. Concrete surfaces shall be (looted prior to steel troweling Formed edges shall be hydrated lime or lime u has been added.Color shat) be as indicated on the rounded to a radius of one-half inch (1 /2"). Edges at expansion joints shall be drawings or as selected by Landscape Architect. - n9 Y Pe rounded to a radius of one-eighth inch (1 /8"). 5. Grout for use in spaces less than two inches (2') clear in dimension shall be one (1) 2. Concrete finishes shah lot as indicated on the drawings and specified herein. port portiand cement and two and one-quarter (2 1 /4) to three (3 porn sand. For spaces four inches 4" or larger odd one and one-quarter 1 1 •d to two 2 its 3. No advertisingim ressions, stomp or mark of an description will be rmiried on Pa ( ) 9 ( /) ( ) P P Y P Pe of aggregate. surface of concrete. 6. Water shall be free of any amount of impurities that will cause change in the time A. Concrete shall not be covered with plastic sheeting. of setting of portland cement. Quantity of water shall be the minimum required to � S. Broom finish, where indicated on the drawings, shall be performed after finish produce o mixture sufficiently workable for the purpose intended. troweling by drawing the following broom types across the narrowest width of the 7Cement shall be T 11 low alkali portlond cement conformin to ASTM C-150. concrete or in the direction as indicated on the drawings. Cement shall. f r g be o the the some brand and type used throughout the protect. a. Fine Broom - Push with fine or soh textured bristles. 8. Sand shall consist of natural or manufactured granular material, free of deleterious b. Medium Broom - Push with medium or medium stiff bristles. amounts of organic material, mica, loom or cloy conforming to ASTM 0-,404 for C. Heavy Broom - Push with coarse or stiff bristles. grout and ASTM C-144 for mortar. Sand shall be thoroughly and uniformly b. Rock colt finish, where indicated on the drawings, shall be rerformed by applyiwashed. ngrock salt evenlyover entire surface just prior to the finistroweling. Press soft 9. Coarse aggregate shall be composed of ravel r a blend mixture fcrushed crystals into the surface with sufficient trowel pressure so that salt is embedded just P Q o ed u e o P I rock and grovel. Rock products shall be cleon, hard, sound, durable, uniform in barely below surface leaving the tops of the crystals exposed. Cure finished surface quality and free of any detrimental quantity of soft, friable, thin, elongated or in accordance with generally accepted practice. laminated pieces, disintegrated material, organic matter, oil, alkali or other deleterious substance. ,, CALIFORNIA 11 M (W U V1 [-� Z w Z�, >� W c*� �ZaM �0oQ�_ IL U E~�+�> ' �Z 00 IL 0 4 o _ a r� o 0 U s f E k ".F n M